Added initial label unit test.
Added initial label unit test.

akosiaris/jira,VikingDen/jira,coddingtonbear/jira,dbaxa/jira,dwmarshall/pycontribs-jira,kinow/jira,akosiaris/jira,VikingDen/jira,m42e/jira,pycontribs/jira,stevencarey/jira,coddingtonbear/jira,stevencarey/jira,m42e/jira,rayyen/jira,milo-minderbinder/jira,rayyen/jira,dbaxa/jira,awurster/jira,awurster/jira,dwmarshall/pycontribs-jira,kinow/jira,milo-minderbinder/jira,pycontribs/jira